An 69-year-old man develops worsening exercise tolerance 3 months after commencing bleomycin therapy for oral cancer. Which of the following combinations of pulmonary function test findings is most likely to be seen in this patient?
↑ FEV1/FVC; ↔ Diffusing capacity; ↑ Total lung volume
↔ FEV1/FVC; ↓ Diffusing capacity; ↑ Total lung volume
↔ FEV1/FVC; ↓ Diffusing capacity; ↓ Total lung volume
↓ FEV1/FVC; ↔ Diffusing capacity; ↓ Total lung volume
↓ FEV1/FVC; ↑ Diffusing capacity; ↓ Total lung volume
